INSTALLATION MANUAL AND OPERATING
Contents
1. Fixed Pointer Rotating Pointer Traditional Symbolic Airplane Traditional Symbolic Airplane Standard Horizon Dial Standard Horizon Dial Face Layout C Face Layout D Fixed Roll Dial Rotating Roll Dial Fixed Pointer Rotating Pointer Delta Symbolic Airplane Delta Symbolic Airplane Standard Horizon Dial Standard Horizon Dial Face Layout E Face Layout F Rotating Roll Dial Fixed Roll Dial Fixed Pointer Rotating Pointer Traditional Symbolic Airplane Traditional Symbolic Airplane High Resolution Horizon Dial High Resolution Horizon Dial Figure 1 1 Display Configurations Rev M September 1 2009 Manual Number 9015692 Page 7 of 16 Mid Continent Instruments Wichita KS Face Layout G Face Layout H Rotating Roll Dial Fixed Roll Dial Fixed Pointer Rotating Pointer Delta Symbolic Airplane Delta Symbolic Airplane High Resolution Horizon Dial High Resolution Horizon Dial Model Input Roll Dial Horizon Dial Symbolic Face Number Voltage Airplane Layout 4300 311 511 10 to 32 VDC Rotating Standard Traditional A 4300 312 512 10 to 32 VDC Fixed Standard Traditional B 4300 313 513 10 to 32 VDC Rotating Standard Delta C 4300 314 514 10 to 32 VDC Fixed Standard Delta D 4300 331 531 10 to 32 VDC Rotating High Resolution Traditional E 4300 332 532 10 to 32 V2. by the actuation of the caging system C Taxiing Errors A pitch and roll indicator display error of approximately 1 will occur during a sudden 90 ground turn A pitch indicator display error of approximately 2 will occur during a sudden 180 ground turn Errors that develop will be self corrected by the internal erection system or manually corrected by the actuation of the caging system Rev M September 1 2009 Manual Number 9015692 Page 16 of 16
3. installer will need to determine what is correct for a particular installation CAUTI ON Do not exceed 1 06 screw depth into bezel 2 3 3 Additional Parts that may be required A B C D Symbolic Airplane Adjustment Knob Cover Kit P N 36022 Slip Indicator Kit P N 36023 Front Mount Kit 3 32 thk P N 36028 1 or 1 2 thk P N 36027 1 Panel Wedges 3 P N PW3R 3 or 4 P N PW3R 4 2 4 Equipment Location The attitude indicator should be located within the aircraft in accordance with the following considerations A The indicator is ideally located in the instrument panel directly in line with the pilot s normal line of sight The PULL TO CAGE knob should be within easy reach Installations that result in viewing angles in excess of 30 degrees may reduce display readability Compare the space requirements of the indicator with the installation area being considered The power cable should not run adjacent to heaters engine exhausts or other heat sources Also take care to route and tie the cable away from aircraft controls and cables Rev M September 1 2009 Manual Number 9015692 Page 11 of 16 Mid Continent Instruments Wichita KS 2 5 Installation NOTE Before installing unit verify the option label on the unit matches the aircraft requirements for instrument voltage lighting voltage color and panel tilt Install the Electric Attitude Indicator within the aircraft in accordance with the airc
4. DC Fixed High Resolution Traditional F 4300 333 533 10 to 32 VDC Rotating High Resolution Delta G 4300 334 534 10 to 32 VDC Fixed High Resolution Delta H Figure 1 1 Cont Display Configurations Rev M September 1 2009 Manual Number 9015692 Page 8 of 16 Mid Continent Instruments Wichita KS Roll Pointer A Fixed roll pointer Indicates aircraft roll displacement relative to a rotating roll dial B Rotating roll pointer Indicates aircraft roll displacement relative to a fixed roll dial Gyro Warning Flag If loss of input voltage should occur gyro warning flag will come into view Display Lower area of display when referenced to the symbolic airplane indicates aircraft nose is below horizon or in a dive attitude Upper area of display indicates aircraft nose is above horizon or in a climb attitude Symbolic Airplane Indicates roll and pitch attitude relative to the horizon The symbolic airplane can be moved pitch only using the symbolic airplane adjustment knob Horizon Line Indicates earth horizon relative to aircraft pitch and roll attitude Caging knob When pulled manually erects the gyro vertical to the case orientation Manual Erection Symbolic Airplane Used to adjust the symbolic airplane Adjustment Knob Typical Electric Attitude I ndicator Display Roll Pointer Orange Gyro Warning Flag oe Red Z Blue TAS dM Background Symbolic Airplane Orange Ay N i C
5. MID CONTINENT nor ELM INSTALLATI ON MANUAL AND OPERATI NG I NSTRUCTI ONS 4300 3XX and 4300 5XX Series Electric Attitude Indicator MID CONTINENT INST CO INC MANUAL NUMBER 9015692 Mid Continent Instruments Wichita KS Copyright 2003 Mid Continent Instrument Co Inc Rev M September 1 2009 Manual Number 9015692 Page 2 of 16 Section 1 Rev M September 1 2009 Mid Continent Instruments Wichita KS Table of Contents General Description Purpose of Equipment Physical Description Functional Description Gyro Warning Flag Options and Configurations Specifications Installation General Pre Installation Inspection Parts Included Parts Installer Supplied Parts Additional Optional Parts Equipment Location Installation Continued Airworthiness Operation General Starting Procedures In Flight Procedures Dynamic Errors List of Illustrations Display Configurations Typical Indicator Display Detail Outline Drawings Rear Mount Cutout Dimensions Front Mount Cutout Dimensions List of Tables Options Table Physical Characteristics Performance Light Tray Assembly Options Manual Number 9015692 ooo U Page 3 of 16 Mid Continent Instruments Wichita KS Revision Detail ECO Rev Date Detail N R 07 28 03 Complete issue A 08 05 03 Change current spec in Table 1 3 PG 6 B 09 26 03 Add Fig 2 3 Add front mount kits to opti
6. N WY Nae 4 7 f Caging knob Symbolic Airplane Brown Adjustment Knob Background 301 311 configuration shown Rotating Roll Dial Fixed Roll Pointer Traditional Wing Symbolic Airplane Shown Figure 1 2 Rev M September 1 2009 Manual Number 9015692 Page 9 of 16 Mid Continent Instruments Wichita KS Section 2 Installation 2 1 General This section contains mounting electrical connections and other information required for installation After installation of cabling and before installation of the equipment ensure that power is applied only to the pins specified in the interconnection diagram CAUTION GYROS ARE DELICATE INSTRUMENTS THE FOLLOWING PRECAUTIONS MUST BE OBSERVED A A high gyroscope failure rate can be directly related to rough or improper handling Gyros are delicate and cannot withstand the shock of being dropped jarred or struck by pieces of equipment Do not place gyros on any hard surface Pad with generous foam Handle like eggs B To prevent damage to a gyro the instrument should be transported to and from the aircraft in it s original shipping container If this is impractical the gyro should be hand carried carefully in an upright position C A gyro should never be removed while it is spinning or running down The instrument normally operates at high RPM and may take 10 minutes or longer to run down If it is removed while running and tilted more than 20 degrees the gyro can develop a gimbal lo
7. ck The gimbal will tumble and start to spin If gimbal lock occurs while the rotor is turning the gimbal may spin fast enough to damage the gimbal bearings requiring overhaul D A malfunctioning gyro should be handled with the same care given a new instrument Most malfunctioning instruments can be repaired and returned to service Using proper handling procedures during removal prevents additional damage and helps ensure possible reuse 2 2 Pre installation Inspection A Unpacking Carefully remove Attitude indicator from shipping container The shipping container and packing materials should be retained for use should the attitude indicator require future shipment B Inspect for Damage Inspect the shipping container and attitude indicator for any signs of damage sustained in transit If necessary return attitude indicator to the factory using the original shipping container and packing materials File any claim for damages with the carrier Rev M September 1 2009 Manual Number 9015692 Page 10 of 16 Mid Continent Instruments Wichita KS 2 3 Parts 2 3 1 Included Parts A Model 4300 Electric Attitude Indicator B C Mating Connector MS3116F8 4S or equivalent P N 9015514 Installation Manual P N 9015692 2 3 2 Installer Supplied Parts A Mounting Screw 6 32UNC 2A Three 3 required 1 long screws are suggested for panel thickness between 0 05 and 0 19 but may not be optimum in some installations The
8. d Instrument Panel Mounting Rear mount Front mount with adapter plate Table 1 2 Performance Reliabilit 7500 Hour Mean Time Between Failure MTBF Initial Erection The PULL TO CAGE knob will erect the gyroscope to within 2 0 of case vertical in roll and pitch from any position at any time Final Erection The vertical gyroscope should be allowed to spin up for 3 minutes after rated power is applied and after initial erection After 5 minutes the final erection accuracy of pitch and roll will be within 1 of vertical minute minimum Warning Flag A gyro warning circuit provides for continuous monitoring of gyro voltage If loss of gyro motor voltage occurs the red warning flag will appear Symbolic Airplane The adjustment range will be 4 minimum from the zero pitch position Power Consumption Starting Will not exceed 1 5A at 14 VDC Will not exceed 0 7A at 28 VDC Running Nominal 0 55A 15 at 14 VDC Nominal 0 27A 15 at 28 VDC Lighting Will not exceed 2 5 watts for models using 5V 14V or 28V Table 1 3 Light Tray Assembly Options P N 9015640 5V 14V 28V Blue White 1 2 3 White 4 5 6 Red 7 8 9 NVIS 10 12 Table 1 4 Rev M September 1 2009 Manual Number 9015692 Page 6 of 16 Mid Continent Instruments Wichita KS Face Layout A Face Layout B Rotating Roll Dial Fixed Roll Dial
9. ents or the horizon If the gyro is caged when the aircraft is not in this attitude the resulting attitude presentation immediately after caging will be in error by the difference between true vertical and actual aircraft attitude Small errors in caging erection will be corrected by the indicator to true vertical in pitch and roll at 2 5 per minute minimum 5 min nominal 3 3 In Flight Procedures A Adjust symbolic airplane to obtain desired pitch attitude presentation after take off B In the event of errors in excess of 10 caused by extended bank or fore aft acceleration the indicator should be momentarily caged after the aircraft is returned to level flight 3 4 Dynamic Errors A Turn Induced Errors Pitch indication errors resulting from a standard coordinated turn 180 degrees in one minute at a true airspeed of 156 knots will not exceed 3 Dynamic errors developed under non standard conditions may be greater Errors that develop will be self corrected by the internal erection system or manually corrected by the actuation of the caging system Rev M September 1 2009 Manual Number 9015692 Page 15 of 16 Mid Continent Instruments Wichita KS B Acceleration amp Deceleration Errors Pitch indicating errors may occur due to accelerations experienced during takeoff climb out descent and landing Errors that develop will be self corrected by the internal erection system or manually corrected in straight and level flight
10. g a user replaceable light tray assembly operates from the aircraft lighting bus and is available in 5V 14V or 28V versions 1 4 Gyro Warning Flag A power warning circuit monitors the electrical current used to power the gyro motor When a loss of input voltage occurs the gyro warning flag comes into view 1 5 Options and Configurations Options Table Panel Tilt Calibration 0 to 20 Lighting Voltage 5V 14V or 28V See Table 1 4 Lighting Color Blue White White Red or NVIS Green A See Table 1 4 Miscellaneous Parts Non trimmable Symbolic Airplane Knob Cover P N 36022 Slip Indicator Kit P N 36023 Front Mount Kit 3 32 thk P N 36028 1 or 1 2 thk P N 36027 1 Panel Wedges 3 P N PW3R 3 or 4 P N PW3R 4 Mating Connector Kit P N 9015514 Table 1 1 Rev M September 1 2009 Manual Number 9015692 Page 5 of 16 Mid Continent Instruments Wichita KS 1 6 Specifications Physical Characteristics Qualification FAA TSO C4c Environmental Qualification RTCA DO 160D Environmental Category C1BAB SBM RBB1 P XXXXXXZZAZZ WF M A3H33 XXA Weight 3XX 2 7 pounds 5XX 2 5 pounds Dimensions Length behind panel not including mating connector 6 6 inches long maximum 3 28 inches high maximum 3 28 inches wide maximum Mating Connector MS3116F8 4S or equivalent MCI P N 9015514 Cover Glass HEA anti reflective coate
11. igure 2 3 Front Mount Panel Cutout Dimensions Rev M September 1 2009 Manual Number 9015692 Page 14 of 16 Mid Continent Instruments Wichita KS Section 3 Operation 3 1 General This section describes the Model 4300 3XX and 4300 5XX Electric Attitude Indicator operating procedures The indicator is required to be installed in an aircraft with the specified inputs applied Figure 1 2 provides an illustration of a typical Model 4300 display and a table describing indicator functions 3 2 Starting Procedures The following operational procedures are recommended when preparing the indicator for use CAUTION THE INDICATOR MAY BE DAMAGED IF THE PULL TO CAGE KNOB IS RELEASED WITH A SNAP RELEASE PULL TO CAGE KNOB AVOI DING A SNAP RELEASE NOTE Indicator may be momentarily caged by pulling PULL TO CAGE knob to the fully extended position holding knob until the display stabilizes and then allowing the knob to return to the normal position A Apply power to the indicator Note that the Gyro Warning flag red will pull out of view Also allow three minutes for presentation stabilization B On models with trim adjustment rotate the symbolic airplane adjustment knob for the desired pitch attitude presentation i e aligning the symbolic airplane with the horizon C If caging is required caging should be accomplished when the aircraft is in a wings level normal cruise attitude as indicated by other instrum
12. ons table Add 4300 33X to Fig 1 1 C 05 18 04 Update connector pin out Lighting No polarity revise currents in Table 1 3 Add DO 160D environmental test qualification in Table 1 2 add Equipment Limitations Section 3 5 4098 D 08 16 04 Add 4300 5XX Series 4201 E 11 17 04 Change DO 160D statement in section 1 6 from A2 to C1 for 35K altitude 4307 F 03 28 05 Add Special HIRF Considerations paragraph to section 2 5 Update DO 160D statement in section 1 6 from RR to WWI 4395 G 07 22 05 Add NVIS to the Lighting Options in Section 1 5 and Table 1 4 4834 H 04 30 07 Delete 30X and 50X single voltage versions 4917 J 09 20 07 Correct Figure 2 1 to show both 5XX and correct pinout Remove paragraph in Section 2 5 regarding Special HIRF Considerations 4956 K 12 13 07 Update DO 160 qualification in section 1 6 from WW to WF and from A3C3 to A3H33 Note This change is incorporated only on units identified as Mod Status 4 as indicated on the unit nameplate 5186 L 04 07 09 Remove Equipment Limitations Section 3 5 5270 M 09 01 09 Update DO 160 qualification in section 1 6 from SBM RBB1 to L SBM RBB1 P Rev M September 1 2009 Manual Number 9015692 Page 4 of 16 Mid Continent Instruments Wichita KS Section 1 General Description 1 1 Purpose of Equipment The Model 4300 3XX and 4300 5XX Electric Attitude Indicator incorporates a moving display tha
13. raft manufacturer s instructions and the following steps A Referto Figure 2 1 for installation dimensions and electrical information B Ensure the available instrument panel cutout meets the requirements of the indicator See Fig 2 2 or Fig 2 3 for details C Attach aircraft electrical system cable to indicator connector and insert the indicator into the instrument panel cutout D Secure the indicator to the instrument panel using the screw sizes called out in the mounting instructions Length of screws will be determined by aircraft instrument panel thickness The aircraft manufacturer or the installation facility is responsible for supplying appropriate installation hardware E Apply the correct input power to the indicator F The Gyro Warning flag red will be out of view G Check to determine that the indicator internal lighting is working correctly 2 6 Continued Airworthiness No periodic scheduled maintenance or calibration is necessary for continued airworthiness of the 4300 series Electric Attitude Indicator If the unit fails to perform to specifications it must be removed and serviced by a qualified service facility Rev M September 1 2009 Manual Number 9015692 Page 12 of 16 Mid Continent Instruments Wichita KS _ Figure 2 1 Outline Drawing Rev M September 1 2009 Manual Number 9015692 Page 13 of 16 Mid Continent Instruments Wichita KS i M we i i E A u X Ev i s F
14. t simulates the earth s horizon and provides the pilot with a real time visual indication of the aircraft pitch and roll attitude relative to the indicator symbolic airplane The instrument can function as a primary or standby indicator with special configurations available to match existing systems or electronic flight displays Optional features that are available include panel tilt lighting color voltage airplane trim knob cover front mount adapter plates and a slip indicator 1 2 Physical Description The 4300 3XX and 4300 5XX Electric Attitude Indicator incorporates pitch and roll displays that are mechanically linked to a spinning mass gyroscope The horizon bar moves behind the symbolic airplane Precession error is corrected by the 4300 s erection system or by pulling the PULL TO CAGE knob A warning flag drops into view to indicate that the gyro motor is not receiving sufficient power to operate 1 3 Functional Description Model 4300 3XX and 4300 5XX Electric Attitude Indicators employ an efficient electrically driven internal vertical gyroscope assembly incorporating a special air erection mechanism This mechanism simultaneously erects the pitch and roll axes of the gyroscope Movement of the aircraft generates a reaction of the display that simulates the visual reference seen by the pilot when looking outside at the earth s true horizon line The Indicator requires 10 to 32 VDC input voltage An integral lighting system featurin
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